EP2744730B1 - Spritzgussetikettierte kapsel zur herstellung von getränken - Google Patents
Spritzgussetikettierte kapsel zur herstellung von getränken Download PDFInfo
- Publication number
- EP2744730B1 EP2744730B1 EP12740166.9A EP12740166A EP2744730B1 EP 2744730 B1 EP2744730 B1 EP 2744730B1 EP 12740166 A EP12740166 A EP 12740166A EP 2744730 B1 EP2744730 B1 EP 2744730B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- label
- capsule
- capsule body
- mould
- fringes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- 239000002775 capsule Substances 0.000 title claims description 128
- 235000013361 beverage Nutrition 0.000 title claims description 27
- 238000002360 preparation method Methods 0.000 title claims description 23
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 239000012528 membrane Substances 0.000 claims description 31
- 230000004888 barrier function Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 13
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 8
- 238000002372 labelling Methods 0.000 claims description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000012815 thermoplastic material Substances 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 235000013305 food Nutrition 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 239000002028 Biomass Substances 0.000 claims 1
- 239000004793 Polystyrene Substances 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 13
- 239000004033 plastic Substances 0.000 description 13
- 235000013353 coffee beverage Nutrition 0.000 description 12
- 239000012530 fluid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000001746 injection moulding Methods 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000020965 cold beverage Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000015114 espresso Nutrition 0.000 description 1
- 235000012171 hot beverage Nutrition 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
- B65D85/8043—Packages adapted to allow liquid to pass through the contents
- B65D85/8058—Coding means for the contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
- B65B29/022—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into capsules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
- B29C2045/14057—Inserting articles into the mould feeding inserts wrapped on a core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
Definitions
- the present invention concerns a capsule for preparing a beverage in a beverage preparation machine, wherein said capsule is produced by in-mould labelling.
- Beverage preparation machines are well known in the food science and consumer goods area. Such machines allow a consumer to prepare at home a given type of beverage, for instance a coffee-based beverage, e.g. an espresso or a brew-like coffee cup.
- a coffee-based beverage e.g. an espresso or a brew-like coffee cup.
- beverage preparation machines for in-home beverage preparation comprise a system made of a machine which can accommodate portioned ingredients for the preparation of the beverage.
- Such portions can be soft pods or pads, or sachets, but more and more systems use semi-rigid or rigid portions such as rigid pods or capsules.
- the beverage machine of the invention is a beverage preparation machine working a rigid capsule.
- the machine comprises a receptacle for accommodating said capsule and a fluid injection system for injecting a fluid, preferably water, under pressure into said capsule.
- a fluid preferably water
- Water injected under pressure in the capsule, for the preparation of a coffee beverage according to the present invention is preferably hot, that is to say at a temperature above 70°C. However, in some particular instances, it might also be at ambient temperature.
- the pressure inside the capsule chamber during extraction and/or dissolution of the capsule contents is typically about 1 to 6 bar for dissolution products, 2 to 12 bar for extraction of roast and ground coffee.
- Such a preparation process differs a lot from the so-called "brewing" process of beverage preparation - particularly for tea and coffee, in that brewing involves a long time of infusion of the ingredient by a fluid (e.g. hot water), whereas the beverage preparation process allows a consumer to prepare a beverage, for instance coffee within a few seconds.
- the principle of extracting and/or dissolving the contents of a closed capsule under pressure is known and consists typically of confining the capsule in a receptacle of a machine, injecting a quantity of pressurized water into the capsule, generally after piercing a face of the capsule with a piercing injection element such as a fluid injection needle mounted on the machine, so as to create a pressurized environment inside the capsule either to extract the substance or dissolve it, and then release the extracted substance or the dissolved substance through the capsule.
- a piercing injection element such as a fluid injection needle mounted on the machine
- the machine comprises a receptacle for the capsule and a perforation and injection element made in the form of a hollow needle comprising in its distal region one or more liquid injection orifices.
- the needle has a dual function in that it opens the top portion of the capsule on the one hand, and that it forms the water inlet channel into the capsule on the other hand.
- the machine further comprises a fluid tank - in most cases this fluid is water - for storing the fluid that is used to dissolve and/or infuse and/or extract under pressure the ingredient(s) contained in the capsule.
- the machine comprises a heating element such as a boiler or a heat exchanger, which is able to warm up the water used therein to working temperatures (classically temperatures up to 80-90°C).
- the machine comprises a pump element for circulating the water from the tank to the capsule, optionally though the heating element. The way the water circulates within the machine is selected via a selecting valve means, such as for instance a peristaltic valve of the type described in applicant's European patent application EP 2162653 A1 .
- the beverage to be prepared is coffee
- one interesting way to prepare the said coffee is to provide the consumer with a capsule containing roast and ground coffee powder, which is to be extracted with hot water injected therein.
- capsules comprise typically, as illustrated in figure 1 :
- the capsule body is a tri-dimensional complex element, comprising at its bottom part a step such that the aluminum membrane described above can be sealed onto the internal surface of said body, as illustrated in figure 1 .
- the capsule body is typically manufactured by thermoforming a sheet of plastic.
- the capsule body is manufactured using a plastic which is generally a laminate comprising at least one gas and moisture barrier layer.
- a plastic which is generally a laminate comprising at least one gas and moisture barrier layer.
- the aluminum membrane described above provides a good barrier in the lower part of the capsule.
- the top pierceable membrane (“injection wall” described above) is made with a gas and moisture impermeable material as well, which can be mono- or multilayer.
- IML In-mould labelling
- the label is placed in the mould wherein it is held in place by vacuum or other dedicated positioning means.
- the mould is then closed and molten plastic resin is poured or injected into the mould in order to form the packaging container.
- the adhesive of the label is activated due to the heat resulting from the injection of hot resin and thus, the label is adhered to the container, i.e. the label becomes moulded to the container wall.
- EP 1440903 refers to a cartridge for the preparation of a beverage with a barrier coating applied by a number of mechanisms including in-mould labelling.
- JP 10129737 A for example relates to a packaging container with an opening having oxygen gas barrier properties.
- an inner wall of a side face of a bottomed container main body and an inner wall of a bottom thereof is provided with in-mould labels for improving the oxygen gas barrier properties of the packaging container.
- GB 1348370 discloses a container comprising a structure or frame, made of a rigid or semi rigid material, which is used as a support for applying a softer material, like for instance a film by an in-mould labelling technique so as to obtain a container
- FR 2700493 A is a French patent application that also discloses a container that is made by injecting a rigid frame onto which a label is attached to complete the container body, for instance by in-mould labelling.
- IML technique provides advantages industrially, in terms of production rate, practicality, and also as it helps reducing the amount of packaging material that is used, hence being economically, and ecologically friendly.
- the capsule according to the invention is characterized in that the outside surface of the capsule body is at least partially covered by a gas-, and optionally moisture-, impermeable label permanently attached by in-mould labelling to said capsule body wall, said label having a tri-dimensional shape such that the labelled capsule is gas and moisture tight.
- the capsule body walls further comprise a circumferential step directed inwardly, which is located between the side and bottom walls.
- the label covers the surface of the capsule body side walls, and the surface of the step, and more preferably, said label covers also the surface of the body bottom wall.
- the external diameter of the bottom membrane be greater than the inside diameter of the label in the step region, thus creating an overlap ("Op") between the bottom membrane and the label in said step region.
- said overlap can be set between 1 and 3 mm wide.
- the capsule body step can be horizontal relative to the vertical symmetry axis of the capsule.
- the present invention is also directed to a process for making a beverage preparation capsule as described above, characterized in that it comprises the steps of, in order:
- the label comprises fringes on the smallest edge of the arc segment, so that the punching step bends said fringes inwardly, creating at least partial overlaps between adjacent fringes.
- the inward step created comprises creases, through which gas and/or moisture can pass, which is of course highly undesirable.
- the fringes can be disposed tangentially perpendicular relative to the edge of the label arc segment.
- the fringes are disposed tangentially oblique relative to the edge of the label arc segment.
- Such a configuration has shown particularly good results regarding the reliability of the forming process, when the label is punched to create a step edge. No creases or wrong bending of the fringes has occurred. This is due to the fact that the oblique direction of the fringes one relative to the adjacent others creates a dynamic movement of deformation during punching, wherein all fringes follow the same bending direction such that adjacent fringes overlap naturally one onto the other. This positive effect was proved especially at high production rates.
- the capsule according to the present invention is meant to be used in a beverage preparation machine 1 as illustrated in figure 2 .
- the machine comprises a machine body 2 containing a water pump, a water heating element and an electronic board for controlling the machine functions, a water reservoir 3, an on/off switch 4, a brewing head 5 which is in fluid communication with the water pump, heating element, and the water reservoir 3.
- the machine further comprises a temperature lever 6 for the user to select hot or cold beverage preparation.
- the brewing head 5 comprises a locking latch 7 to lock or release the insertion into an opening 8 of a capsule holder 9.
- the machine further comprises a cup tray 10.
- the capsule holder 9 is meant to be loaded with a capsule 11.
- the loaded capsule holder is then inserted into the opening 8 of the brewing head 5, locked thereinto by moving the locking latch 7 downwardly, such that a piercing element (not illustrated) pierces the capsule top wall, in a configuration ready for injection of water inside the capsule, and thus beverage preparation.
- the capsule 11 comprises a capsule body with side walls 12 and a bottom wall 13 having a dispensing opening 14.
- the capsule is hermetically closed after its filling and during storage by a top membrane 15 and a bottom aluminium membrane 16.
- the top membrane is pierceable by a needle "N" of the beverage preparation machine, said needle being adapted to inject a liquid under pressure inside the capsule in order to extract and/or dissolve beverage preparation ingredients "RG" contained inside said capsule.
- a pierced film 17 is sealed on top of the mass of roast and ground coffee, as described in applicant's European patent EP 1784344 B1 , in order to maintain the mass of ingredient during injection of liquid inside the capsule.
- the capsule 11 further comprises means to open the bottom membrane 16 when liquid pressure inside the capsule raises above a certain level. This means is a plate 18 comprising piercing protrusions on its surface which is turned towards the bottom membrane 16.
- the capsule 11 illustrated in figure 4 is manufactured such that the capsule body is a one-piece plain element, made of a polypropylene injection-moulded material.
- the capsule body further comprises a circumferential step 19 directed inwardly which is located between the side wall 12 and bottom wall 13 of the capsule body.
- Such a material is not barrier to gas and moisture, and therefore cannot protect the capsule contents during storage.
- the invention provides a capsule 11 wherein the body side wall 12 and the step 19 are covered with a label 20 made out of a gas and moisture barrier material, as illustrated in figure 4 .
- the bottom membrane 16 is sealed on the internal surface of the step 19
- the label 20 is sealed on the external surface of said step 19
- the external diameter of the bottom membrane is greater than the inside diameter of the label in the step region such that an overlap "O p " between the bottom membrane 16 and the label 20 is created.
- overlap it is meant a dimensional overlap when considering the capsule in the transverse direction as illustrated in figure 4 .
- Such an overlap is not a mechanical overlap as the bottom membrane 16 and the label 20 are not in contact with each other.
- Such an overlap is important as it ensures that the gas and moisture barrier is effective, as no gas or water vapour molecules can transfer from outside the capsule towards the inside, through said step 19.
- the invention is further directed to a process for manufacturing a capsule as described above. Said process will now be described in reference to figures 5 to 10 .
- steps which relate to the production of the capsule body will be described in detail. Other steps for the production of a fully finished and filled capsule will not be described because they are known as such.
- steps comprise injection moulding the piercing plate 18, and placing the latter into the capsule body, then sealing the bottom membrane 16 onto the internal sides of the step 19, the filling the capsule body with an ingredient, the optionally sealing a pierced film 17, then sealing the top membrane 15 onto the capsule body top edge.
- the first step of the production of a capsule body according to the invention comprises cutting a flat label 20 from a film roll made of a gas and moisture barrier material.
- the label thus cut has the general shape of an arc segment as shown in figure 5 .
- the label 20 in its flat configuration is then approached from an injection moulding core 21 which has a generally frustoconical shape corresponding to that of the capsule body, and which has the positive shape relative to a corresponding hollow injection moulding cavity 22.
- the label is electrostatically charged and therefore it is then removably fixed onto the surface of the metallic core 21, as shown in figure 6 .
- an intermediary forming element 21' can be used, which generally has the same shape than that of the injection moulding core 21, but without the protruding bottom shape 21" that moulds the lowermost inner portion of the capsule.
- Such an intermediate forming element is illustrated in figures 7 and 8 , where it replaces the conventional injection moulding core during the label forming process. If such a forming element is used, of course the formed label is then transferred mechanically into the cavity of the injection mould as described hereafter, for injection moulding of the capsule according to the invention.
- the injection mould comprises a mould cavity and a mould core as described above and hereafter, and as illustrated for instance in figures 5 , 9 and 10 .
- the label 20 is formed around the core 21 or the forming element 21' as illustrated in figure 7 .
- This forming step is performed by creating a vacuum at the surface of the core or forming element (in that case, the core or forming element comprises an aspiration system), or alternatively, the label 20 can be formed around the core 21 or forming element 21' by application of mechanical means - not illustrated in the drawing -. In that position, the lower part of the label (which now has a generally cylindrical shape) extends outside of the core, or forming element 21' as shown in the partially cut portion of figure 7 .
- the label 20 thus formed and fixed around the core 21 or forming element 21' is then approached to a step-forming punch element 23 which is pressed from below said core 21 or element 21', onto the lower edge of the label 20 which protrudes from the core 21 or element 21'.
- This inward step edge 24 is meant to adapt exactly to the step portion 19 of the capsule body as also illustrated in figure 4 .
- the formed label is transferred into the mould cavity which is closed, as illustrated in figure 9 , in a configuration of the injection mould, ready for injection of the capsule body plastic part.
- the injection takes place, such that molten plastic flows between the core 21 and the label 20 (not shown).
- the material of the label and the injected plastic are sealed one to the other, such that when the injection mould opens by moving the core 21 out, the label is permanently fixed onto the outside surface of the capsule body, in the region of the side walls 12 and step 19, as illustrated in figure 10 .
- the capsule body thus formed is ready for the following capsule-forming steps already described above (assembly with piercing plate 18, sealing of membranes, filling).
- the present invention provides an efficient guarantee that such creases will not appear in the thickness of the label 20.
- the label when in its flat configuration as illustrated in figure 11 , is manufactured with fringes 25. The fringes are cut along the small arcuate side of the label arc segment.
- the fringes can be cut vertically relative to the vertical symmetry axis "A v " of the label when the latter is in its folded configuration.
- Such a configuration is efficient in preventing creases, because when bottom inward edge 24 of the label 20 is formed as described above in reference to figure 8 , the fringes will bend inwardly and due to the reduced diameter of the label thus formed, from the outside towards the inside, adjacent fringes stay flat and only overlap one onto the other as shown in the enlarged part of figure 13 . This prevents an erratic deformation of the label material in this region which would cause creases.
- the fringes 25 can be cut such as to be disposed tangentially oblique relative to the small arcuate edge of the label arc segment, as illustrated in figures 14, 15, and 16 .
- Figure 14 illustrates such a label 20 with oblique fringes 25 in its flat configuration.
- Figure 15 shows the same label after being formed around the core element of the injection mould.
- figure 16 illustrates the same formed label after punching of the lower edge of the label inwardly to form the edge 24 which corresponds to the step portion 19 of the capsule body.
- the forming steps of the label 20 are the same as previously described.
- the label is provided as a flat element, and it is then given a tridimensional shape by forming around for instance a forming element 21' as illustrated in figures 7 and 8 for example.
- the injection is then closed by moving the injection moulding core 21 towards the cavity 22, so as to obtain a closed injection mould as illustrated in figures 9 or 17 .
- said material "M” is injected through an injection point "IP" that is located at the lowermost end of the capsule, as shown in figure 17 .
- thermoplastic material which is in a molten, thus fluid, state, flows upwardly to the top end of the capsule, as illustrated with a dark thick line in figures 17 to 24 .
- the movement of the thermoplastic material in the mould cavity is illustrated by an arrow in figure 18 .
- the uppermost end portion 26 of the label 20 has an additional length so that it extends through the width of the mould cavity.
- the label 20 is maintained towards the outer mold side by electrostatic charge or vacuum.
- the label is folded so that it also extends through the width of the mould cavity in its lowermost end 27.
- the molten thermoplastic then enters in contact with the lowermost end 26 of the label 20, at an angle comprised between 0° and 60° relative to the vertical.
- the first contact point between the molten plastic material "M" and the label 20 is the fringes 25 of the label. These fringes 25 are moved from the mould cavity 22 toward the core 21 of the injection mold, and the label 20 is held in place in that position by the injected plastic material which presses said label from below, as shown in figure 19 .
- the molten thermoplastic moves the extra label length 26 onto the radius of the capsule flange 28, under pressure and temperature.
- the length of the uppermost end 26 of the label 20 in this area is sufficient to allow said label to extend and cover the inner surface of the capsule body in the horizontal flange section 28 as well, where the sealing of the capsule top membrane 15 will be performed after product filling. This creates an overlap between the label 20 located at the upper surface of the capsule top flange, and the top membrane that closes the capsule, thus providing a perfect barrier to oxygen between the closing membrane and the barrier label.
- the label preferably comprises fringes 25 as described before.
- the label edges will position themselves relative to the flow of molten plastic that flows within the mould, such as to ensure that said label will properly move from the mould cavity portion where it is first attached (as illustrated for instance in figure 18 ) towards the core portion of the mould (as illustrated in figures 19 to 22 ).
- the barrier top membrane 15, the bottom membrane 16, and the label 20 can be made each of a gas-tight, and preferably moisture-tight material chosen within the list of: ethylene vinyl alcohol (EVOH), silicium oxide (SiOx), aluminium oxide (AlOx), aluminium, or metalized plastic, or a combination thereof.
- EVOH ethylene vinyl alcohol
- SiOx silicium oxide
- AlOx aluminium oxide
- metalized plastic or a combination thereof.
- the materials of this list can also be associated to plastic films made of polypropylene (PP), polyethylene (PE), polyethylene terephtalate (PET), polyethylene naphthalate (PEN), polylactic acid (PLA), or a combination thereof, to create laminated barrier films.
- PP polypropylene
- PE polyethylene
- PET polyethylene terephtalate
- PEN polyethylene naphthalate
- PLA polylactic acid
- Such laminated barrier films include for instance - but are not limited to - EVOH/PP, PET/SiOx/PP, PET/AlOx/PP, PET/Aluminium/PE.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Apparatus For Making Beverages (AREA)
- Packages (AREA)
Claims (9)
- Getränkezubereitungskapsel (11), die eine geschlossene Kammer zum Umschließen einer Masse von löslichem und/oder extrahierbarem Lebensmittelmaterial definiert, zur Verwendung in einer Getränkezubereitungsmaschine, umfassend:(i) einen Kapselkörper mit Seitenwänden (12), eine durch eine Abgabeöffnung (14) offene untere Wand (13), wobei die Kapselkörperwände ein spritzgegossenes thermoplastisches Material auf Öl- oder Biomasse-Basis umfassen, das ausgewählt ist aus der Liste bestehend aus: Polypropylen (PP), Polyethylen (PE), Polystyrol (PS), Polycarbonat (PC), Polyethylenterephtalat (PET) oder Polymilchsäure (PLA), wobei die Kapselkörperwände weiterhin eine nach innen gerichtete umlaufende Stufe (19) umfassen, die sich zwischen der Seitenwand und der unteren Wand befindet,(ii) eine gas- und feuchtigkeitsundurchlässige Deckmembran (15), die durch Injektionsmittel (N) der Maschine durchstoßen werden kann, die dazu angepasst sind, eine Extraktionsflüssigkeit unter Druck in die genannte Kammer zu injizieren; und(iii) eine gas- und flüssigkeitsundurchlässige (16) Bodenmembran, die innerhalb des Kapselkörpers neben der unteren Wand (13) abgedichtet ist,(iv) die Mittel (18), die dazu angepasst sind, die Kammer durch Zusammenwirken mit der Bodenmembran unter der Wirkung des Druckanstiegs in der Kammer während der Injektion der genannten Flüssigkeit zu öffnen,gekennzeichnet dadurch, dass die innere oder äußere Oberfläche des Kapselkörpers zumindest teilweise von einem gas- und optional feuchtigkeitsundurchlässigen Etikett (20) bedeckt ist, das dauerhaft durch IML(in-mould labelling)-Technik an der Kapselkörperwand befestigt ist, wobei das Etikett eine dreidimensionale Form aufweist, sodass die beschriftete Kapsel gas- und feuchtigkeitsdicht ist, und dadurch, dass das Etikett (20) auch die Oberfläche der Stufe (19) bedeckt.
- Kapsel (11) nach Anspruch 1, wobei das Etikett (20) die äußere Oberfläche der Kapselkörperseitenwände (12), die äußere Oberfläche der Stufe (19) und die äußere Oberfläche der unteren Körperwand (13) bedeckt.
- Kapsel (11) nach einem der vorstehenden Ansprüche 1 oder 2, wobei der Außendurchmesser der Bodenmembran größer ist als der Innendurchmesser des Etiketts im Bereich der Stufe, sodass eine Überlappung ("Op") zwischen der Bodenmembran und dem Etikett im Stufenbereich entsteht.
- Kapsel (11) nach Anspruch 3, wobei die Überlappung zwischen 1 und 3 mm breit ist.
- Kapsel (11) nach einem der vorstehenden Ansprüche 1 bis 4, wobei die Stufe in Bezug auf die vertikale Symmetrieachse der Kapsel horizontal ist.
- Verfahren zur Herstellung des Körpers einer Getränkezubereitungskapsel (11) nach einem der vorstehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es folgende Schritte in der angegebenen Reihenfolge umfasst:(i) Bereitstellen eines gas- und feuchtigkeitsundurchlässigen flachen Etiketts (20), das eine allgemeine Form eines Bogensegments aufweist,(ii) Positionieren und anschließendes Formen des flachen Etiketts um einen kegelstumpfförmigen Kern (21, 21') zu einem kegelstumpfförmigen Etikettenband,(iii) Stanzen der kleinen Kegelspitze des Etikettenbands, um es nach innen zu verformen und eine nach innen gerichtete Stufenkante (24) zu erzeugen,(iv) Positionieren des Etikettenbands mit seiner Stufe in einer Form und Schließen der Form,(v) Injizieren eines thermoplastischen Materials in die Form, um einen einlagigen thermoplastischen Kapselkörper zu formen, der auf seiner inneren oder äußeren Oberflächee mit dem Etikett gekennzeichnet ist, wobei der Kapselkörper Seitenwände, eine durch eine Abgabeöffnung offene untere Wand und eine umlaufende, nach innen gerichtete Stufe, die sich zwischen den Seitenwänden und der unteren Wand befindet, umfasst, und in der Weise, dass das Etikett die innere oder äußere Oberläche der Seitenwände des Kapselkörpers, und die innere oder äußere Oberfläche des Stufenabschnitts bedeckt.
- Verfahren nach Anspruch 6, wobei das Etikett an der kleinsten Kante des Bogensegments Randelemente umfasst, sodass beim Arbeitsgang des Stanzens die Randelemente nach innen gebogen werden, wobei zumindest teilweise Überlappungen zwischen aneinander angrenzenden Randelementen entstehen.
- Verfahren nach Anspruch 7, wobei die Randelemente tangential senkrecht in Bezug auf die Kante des Etikettenbogensegments angeordnet sind.
- Verfahren nach Anspruch 7, wobei die Randelemente tangential schräg in Bezug auf die Kante des Etikettenbogensegments angeordnet sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12740166.9A EP2744730B1 (de) | 2011-08-19 | 2012-07-27 | Spritzgussetikettierte kapsel zur herstellung von getränken |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11178061A EP2559636A1 (de) | 2011-08-19 | 2011-08-19 | Spritzgussetikettierte Kapsel zur Herstellung von Getränken |
PCT/EP2012/064754 WO2013026651A1 (en) | 2011-08-19 | 2012-07-27 | An in-mould labelled capsule for beverage preparation |
EP12740166.9A EP2744730B1 (de) | 2011-08-19 | 2012-07-27 | Spritzgussetikettierte kapsel zur herstellung von getränken |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2744730A1 EP2744730A1 (de) | 2014-06-25 |
EP2744730B1 true EP2744730B1 (de) | 2016-12-07 |
Family
ID=46581990
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11178061A Withdrawn EP2559636A1 (de) | 2011-08-19 | 2011-08-19 | Spritzgussetikettierte Kapsel zur Herstellung von Getränken |
EP12740166.9A Active EP2744730B1 (de) | 2011-08-19 | 2012-07-27 | Spritzgussetikettierte kapsel zur herstellung von getränken |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11178061A Withdrawn EP2559636A1 (de) | 2011-08-19 | 2011-08-19 | Spritzgussetikettierte Kapsel zur Herstellung von Getränken |
Country Status (7)
Country | Link |
---|---|
US (1) | US9434525B2 (de) |
EP (2) | EP2559636A1 (de) |
JP (1) | JP6159326B2 (de) |
CN (1) | CN103889859B (de) |
AR (1) | AR087598A1 (de) |
ES (1) | ES2616240T3 (de) |
WO (1) | WO2013026651A1 (de) |
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EP2420374A1 (de) * | 2010-08-20 | 2012-02-22 | Nestec S.A. | Spritzgussetikettierter Behälter |
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PT3071495T (pt) | 2014-02-12 | 2021-11-18 | Bisio Progetti Spa | Cápsula para a preparação de bebidas de infusão |
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-
2011
- 2011-08-19 EP EP11178061A patent/EP2559636A1/de not_active Withdrawn
-
2012
- 2012-07-27 JP JP2014525382A patent/JP6159326B2/ja not_active Expired - Fee Related
- 2012-07-27 CN CN201280051503.0A patent/CN103889859B/zh active Active
- 2012-07-27 EP EP12740166.9A patent/EP2744730B1/de active Active
- 2012-07-27 US US14/239,573 patent/US9434525B2/en active Active
- 2012-07-27 ES ES12740166.9T patent/ES2616240T3/es active Active
- 2012-07-27 WO PCT/EP2012/064754 patent/WO2013026651A1/en active Application Filing
- 2012-08-17 AR ARP120103048A patent/AR087598A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
JP6159326B2 (ja) | 2017-07-05 |
EP2744730A1 (de) | 2014-06-25 |
US9434525B2 (en) | 2016-09-06 |
US20140190863A1 (en) | 2014-07-10 |
EP2559636A1 (de) | 2013-02-20 |
CN103889859B (zh) | 2016-06-29 |
CN103889859A (zh) | 2014-06-25 |
JP2014521479A (ja) | 2014-08-28 |
ES2616240T3 (es) | 2017-06-12 |
AR087598A1 (es) | 2014-04-03 |
WO2013026651A1 (en) | 2013-02-28 |
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